Method for coating phosphor particles, phosphor particle, fluorescent lamp, and manufacturing method
CA 1264223 C · Owner: Gte Laboratories Incorporated · Inventors: Sigai, A. Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Disclosed is a method for applying a continuous protective coating to the surface of individual phosphor particles. The method involves chemical vapor deposition of the protective coating on individual particles of a phosphor powder while the phosphor particles are suspended in a fluidized bed. During the method, the fluidized particles are exposed to the vaporized coating precursor material at a first temperature, which is less than the decomposition temperature of the precursor material and, the precursor material is reacted to form the desired coating material at a second temperature which is greater, than or equal to the temperature at which the precursor material reacts to …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 9, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.